Cook the beef and sausage in a skillet until browned then drain the fat.
Spread the mixture in the bottom of a slow cooker.
Add the peppers, onions, tomatoes, chili powder, cumin, and water.
Season liberally with salt and pepper then stir well and cover. Cook on low heat for 6 to 8 hours.
Place the cauliflower in a food processor and pulse into rice-like grains.
Sauté the cauliflower in olive oil until tender (about 5-8 minutes) then serve alongside the chili. Garnish with green onion and fresh chilis, if you like.